摘要
测试了经化学蚀刻、紫外激光预处理及其共同处理后的熔石英355 nm激光损伤阈值;研究了处理前后其损伤斑面积随激光辐照脉冲数的增长情况。结果表明,处理后熔石英355 nm激光损伤阈值得到了提高,且损伤斑面积增长变慢。利用CO2激光对熔石英表面损伤点进行了修复处理,修复后的损伤点R-on-1抗损伤阈值和基底阈值相当,损伤增长得到有效抑制。
Laser-induced damage threshold of fused silica under 355 nm laser were measured before and after chemical etch- ing, UV laser conditioning, and the combined processing. The area of damage spots increased with successive pulses irradiation. The results showed that the laser-induced damage threshold of processed samples increased while the area growth rate decreased. Mitigation of damage sites on fused silica by localized CO2 laser treatment was also investigated. The laser-induced damage thresh- old of treated damage sites was as high as the fused silica substrate by R-on 1 tests. The damage growth of treated sites on fused silica was mitigated effectively.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2010年第7期1436-1440,共5页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
